Omega Speedmaster Speedmaster Professional Moonwatch 3861 Sedna Gold - Diamond / Brown / Bracelet

Reference 310.55.42.50.13.001

Omega Speedmaster Professional Moonwatch 3861 Sedna Gold - Diamond / Brown / Bracelet

About this watch

The Omega Speedmaster Professional Moonwatch 3861 Sedna Gold - Diamond / Brown / Bracelet is a masterpiece of horology, blending art, history, and cutting-edge technology. Crafted from Sedna Gold, this watch boasts a unique color that's both warm and striking. Its round shape and sunburst brown finish give it a luxurious feel, while the diamond-set bezel adds a touch of elegance. The 3861 is equipped with a chronograph feature, allowing you to measure elapsed time with precision. At its heart lies the Omega caliber 3861, an updated version of the legendary caliber 861/1861, featuring a co-axial escapement and silicon balance spring for accuracy and reliability. Master Chronometer certified by METAS, this watch has undergone rigorous testing to withstand magnetic fields of up to 15,000 gauss. Its sleek design and exceptional craftsmanship make it a standout in any collection. Whether you're at a formal event or a casual outing, this watch is sure to turn heads.
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Key Features

  • Sedna Gold case
  • Manual-winding chronograph movement
  • Co-axial escapement and silicon balance spring
  • Master Chronometer certified by METAS
  • Diamond-set bezel
  • Water resistance up to 50 meters
  • 42.00 mm diameter and 13.18 mm height

Specifications

Brand
Omega
Family
Speedmaster
Model
Speedmaster Professional Moonwatch 3861 Sedna Gold - Diamond / Brown / Bracelet
Reference
310.55.42.50.13.001
Movement
3861
Movement Features
  • Small Seconds, Hours, Minutes
  • Chronograph
  • Chronometer
Case
Sedna Gold 42mm
Dial Color
Brown
Crystal
Sapphire
Water Resistance
50

Current Listings

[WTS] Omega Speedmaster Michael Schumacher The Legend Collection $3,499

Omega Speedmaster Michael Schumacher The Legend Collection $3,499

Omega - 321.30.44.50.01.001 · $3,499
The Omega Speedmaster Michael Schumacher The Legend Collection is a limited run watch that celebrates the world of motorsport and Michael Schumacher, with a sleek checkered carbon fiber dial and sporty red accents.

  • Condition: great pre-owned condition with minor wear marks
  • Case diameter: 44mm
  • Lug width: 21mm
  • Water resistance: 100m depth rating
Posted at
Dec 18, 2025, 1:33 PM
Active
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[WTS] Omega "Silver Snoopy" Speedmaster 2025

Omega "Silver Snoopy" Speedmaster 2025

Omega - 310.32.42.50.02.001 · $15,499
This Omega Speedmaster Silver Snoopy Award pays tribute to NASA honoring Omega with the Silver Snoopy Award in 1970 for its crucial role in Apollo 13's safe return.

  • Condition: Brand new, unworn
  • Case size: 42 mm
  • Water resistance: 50 m
Posted at
Dec 17, 2025, 5:41 PM
Active
View listing on r/WatchExchange
[WTS] Omega Speedmaster Professional "Hesalite" 3861 ref 310.30.42.50.01.001

Omega Speedmaster Professional "Hesalite" 3861 ref 310.30.42.50.01.001

Omega - 310.30.42.50.01.001
  • Model type: Speedmaster Professional
  • Crystal type: Hesalite
Posted at
Dec 17, 2025, 3:30 PM
Active
View listing on r/WatchExchange
[WTS] Omega Speedmaster 310.30.42.50.01.001 watch only ($4,799)

Omega Speedmaster 310.30.42.50.01.001 watch only ($4,799)

Omega - 310.30.42.50.01.001 · $4,799
This Omega Speedmaster Moonwatch is a Professional Co-Axial Master Chronometer Chronograph with a black dial on a bracelet.

  • Condition: New
  • Clasp Style: newer style
Posted at
Dec 17, 2025, 3:03 PM
Active
View listing on r/WatchExchange
[WTS] Omega Speedmaster Moonphase ($6,950)

Omega Speedmaster Moonphase ($6,950)

Omega - 304.30.44.52.01.001 · $6,950
This Omega Speedmaster Moonphase is a Master Chronometer Chronograph with a black dial on a bracelet.

  • Material: bracelet material not specified
Posted at
Dec 17, 2025, 2:46 PM
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[WTS] Omega Speedmaster Coin Thingy ($5,999)

Omega Speedmaster Coin Thingy ($5,999)

Omega · $5,999
A listing with little information about the Omega Speedmaster Coin Thingy.

  • Price: 5999
Posted at
Dec 17, 2025, 2:39 PM
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[WTS][US] Omega Speedmaster Chronoscope - White Panda Dial - 43mm - 329.30.43.51.02.002

[US] Omega Speedmaster Chronoscope - White Panda Dial - 43mm - 329.30.43.51.02.002

Omega - 329.30.43.51.02.002 · $5,125
This Omega Speedmaster Chronoscope features a white panda dial and a 43mm case size.

  • Condition: Fantastic condition
  • Case Size: 43mm
Posted at
Dec 17, 2025, 8:42 AM
Active
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[WTS] Omega Speedmaster Moonphase Master Chronometer – Blue Dial – Full Set (2023)

Omega Speedmaster Moonphase Master Chronometer – Blue Dial – Full Set (2023)

Omega - 304.33.44.52.03.001 · $7,150
This is a 2023 Omega Speedmaster Moonphase Master Chronometer with a blue dial, blue ceramic bezel, and complete set of accessories. It features a 44.25mm steel case, Calibre 9904 movement, sapphire crystal front and back, 60h power reserve, 100m water resistance, and moonphase display.

  • Condition: very good with light surface wear on case/clasp
  • Case size: 44.25mm
  • Water resistance: 100m
  • Crystal type: Sapphire
Posted at
Dec 17, 2025, 12:46 AM
Active
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[WTS] Omega Speedmaster Spacemaster Z-33 (only full kit on titanium bracelet for sale in the world!) $4500

Omega Speedmaster Spacemaster Z-33 (only full kit on titanium bracelet for sale in the world!) $4500

Omega - Spacemaster Z-33 · $4,500
The Omega Speedmaster Spacemaster Z-33 is a multifunction quartz watch inspired by the 'Pilot line' with features such as an alarm, chronograph, perpetual calendar, and two-time zone function.

  • Condition: Overall normal for age with scratches on titanium bracelet and minor blemishes on box
  • Water resistance depth: 30 meters
  • Case size: 43mm diameter
Posted at
Dec 16, 2025, 11:15 PM
Active
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